Pipe-coupling.



R. E. ROBERTSON.

PIPE COUPLING.

APPLICATION FILED AUGJ3. 1914.

1 154337, Patented Sept. 28, 1915.

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RICHARD EDWARD ROBERTSON, 0F KELBURN, NEW ZEALAND.

PIPE-COUPLING.

Specification of Letters Patent. I

Patented Sept. 28,1915.

Application filed August 13, 1914. Serial No. 8'5 ,5 97.

ratus of a railway vehicle to the brake apparatus of another vehicle.

Heretofore, brake couplings made of flexible materials have been employed between railway vehicles, and such couplings rapidly wear out and entail considerable expense in I renewals.

The object if this invention is to provide a coupling which will not rapidly wear out.

The invention consists in making a brake coupling of metalpipingwith a flexible joint at each end, one of the joints being connected to the usual brake or train pipe of a railway vehicle and the other being disposed at a right angle to the pipeand having a right angled elbow into which an ordinary coupling head is screwed.

The drawing herewith illustrates the in vention:

Figure 1, is a plan, and, Fig. 2, a sectional plan of the coupling. Fig. 3, is a sideyiew' of one endof the coupling, and Fig. 4:, a

sectional elevation of a modified form of cap. Fig. 5 isa view similar to the left hand part of Fig. 2 on ai'i'enlarged scale.

A socket 1 has a hemispherical or approximately hemispherical interior 2. A hollow ball 3, is made to fit the hemispherical interior of the socket and to screw upon the end of a metal pipe 4. Acup leather 5 makes an air tight joint between the ball 3 and the socket 1 and is retained by a follower 6 having a tubular neck 7 screwed into the ball 3 and having a shoulder 8 which clamps the cup leather against the top of the ball.

The follower has ahead 10 provided with a circumferential groove 11 in which an expansion ring 12 is located to press the cup leather outward and hold it in contact with the hemispherical interior 2 of the socket.

The rim 13 of the socket is screw threaded internally and a ring 14 is. screwed therein, the interior of the ring forming a continuation of the hemispherical interior-2 of the socket. 1

The socket has a screw cap 15 provided with an internal flange 16 having acentral hole. A ring 17 having a short socket. 18v fitting cap for a spring 19 which is in compression between the follower G-and-thering 17 of the socket, when the-partsare assembled. The ring 17 has, a flange 17 surrounding the end of the spring 19 the said spring insuring that the of the pipe 4, and the ball-3 said ball shall be pre 'ented-from' moving inward from its face. Y

The cap 15 has an integrally screwed into the hole in the flange 16 forms av H ball 3 shall keep its correct position in the socket during the movements.

and that the s socket '20 adapted for screwing to the end of the train or brake pipe, 21. In some cases the end of the train pipe is straight and horizontal, in-which case the socket 20 is angled, as shown in Fig. 3. In somecases.

however, the end of the train pipe is-angled in which case the socket 20 has Iio-angle but is made straight, as shown in Fig. 4:. The socket 22 at the other end of the piped is similar to the socket 1 but its cap 23- is angled and the pipe 4: enters at a right angle and its ball24 has an elbow 25 into which an ordinary -Westinghouse coupling 26 screws at a'right angle. The balls and sockets provided at each end of the pipe 4 afford the necessary flexibilityto permit the coupling to yield freely to every movement of the vehicles, and at the same time to remain air tight.

Connection is made between the brakes of two vehicles by raising the couplings 26 until they go together in the ordinary way, and by pressing them downward, as in the case of coupling the usual flexible couplings together.

Th'e'air passes freely through the coupling which is a straight through connection.

The coupling is applicable for use for making flexible connections in water and other pipes.

ing, a flange in the interior of the casing defining an opening, a flanged ring fitting.

herein, a socket having a hemispherical interior, a hollow ball fitting the said hemispherical interior, acup leather making an air tight joint between the ball and the socket, an expansion ring in the cup leather, a follower having a circumferential groove for retaining the said ring, a cap screwed into the socket, a flange in the interior of the .cap defining anopening, a flanged ring fit"ting 'the opening, and a spring in compression between 'the flanged ring and the follower,

3. In a coupling 'for the purpose herein described, a' socket having a hemispherical" I interior, a hollow ballfitting the said hemispherical interior, a cup leather making an I of the hemispherical interior of the socket,

a cap screwed into the cap defining an opening, a, flange in the interior of the socket, a flanged ring fitting the opening, and a spring in compression, between the flanged ring and the follower. J I

In testimony whereof I have signed my name to this specificatlon in the presence of two, w1t'nesses.

RICHARD EDWARD ROBERTSON.

Witnesses: l J. J. WATSON, EDNA COLLEY. 

